DESCRIPTION

The Si4724CY N-Channel synchronous MOSFET with break-before-make (BBM) is a high speed driver designed to operate in high frequency DC/DC switchmode power supplies. It’s purpose is to simplify the use of N-Channel MOSFETs in high frequency buck regulators. This device is designed to be used with any single output PWM IC or ASIC to produce a highly efficient low cost synchronous rectifier converter. A synchronous enable pin (disable = low, enable = high) controls the synchronous function for light load conditions.

The Si4724CY is packaged in Vishay Siliconix’s high performance LITTLE FOOT® SO-16 package.

FEATURES

• 0 V to 30 V operation

• Driver impedance-3

• Undervoltage lockout

• Fast switching times

• 30 V MOSFETs

• High side: 0.0375 at VDD = 4.5 V

• Low side: 0.029 at VDD = 4.5 V

• Switching frequency: 250 kHz to 1 MHz

• Integrated schottky